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过去,都未曾设计过在剧烈振动条件下工作的原子振荡器。近年来,已设计出一些振荡器能够经受一定的振动,但是,现在要求它们能适应峰值为14g的正弦振动和频谱为0.5g~2/Hz或更高的随机振动。在几年前,也许只要求原子振荡器在这些条件下不被损坏,而现在却是它正常工作的环境条件。改善铷振荡器的加速度敏感性的努力已在铷的部分取得成功,但是,当把晶体振荡器的频率倍增到6.8GHz对铷询问时,石英晶体振荡器中振动产生的边带,就带来了很大的困难。当然,晶体振荡器输出的频率对用户也是有用的,但用户在倍增到超高频或微波时也有类似的困难。减少这种困难的途径有:(1)“非晶体”振荡器,(2)比较不灵敏的石英晶体,(3)加速度计补偿电路,(4)上述几种方法的结合。本文致力于研究振动的加速度计补偿和晶体的加速度灵敏度。R.L Filler博士和V.R.Rosati完成的研究工作中应用了大量的參考资料。我们的计划是把政府机构的研究成果与Efratom的研制能力结合起来,生产一种小型化的铷振荡器,这种振荡器是一种适合于在恶劣的Seektalk振动环境下工作的精密原子振荡器。
In the past, no atomic oscillator had been designed to work under severe vibrations. In recent years, some oscillators have been designed to withstand a certain amount of vibration, however, they are now required to be able to accommodate sinusoidal oscillations of a peak of 14 g and random oscillations of a frequency of 0.5 g ~ 2 / Hz or higher. Only a few years ago, the atomic oscillator might only be required to be undamaged under these conditions, and now it is the environmental condition in which it works. Efforts to improve the acceleration sensitivity of rubidium oscillators have been successful in rubidium, however, when the frequency of the crystal oscillator is doubled to 6.8 GHz for rubidium interrogation, the sidebands created by vibrations in the quartz crystal oscillator are brought A lot of difficulties. Of course, the frequency of the crystal oscillator output is also useful to the user, but users have similar difficulties doubling to UHF or microwave. There are several ways to reduce this difficulty: (1) “amorphous” oscillators, (2) less sensitive quartz crystals, (3) accelerometer compensation circuits, and (4) combinations of the above. This article is devoted to studying vibration accelerometer compensation and crystal acceleration sensitivity. A great deal of reference material has been used in the research done by Dr. R. Filler and V.R.Rosati. Our plan is to combine the findings of government agencies with the capabilities of Efratom to produce a miniaturized rubidium oscillator, a precision atomic oscillator suitable for use in harsh Seektalk vibration environments .